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Security Concerns
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When using Remote Assistance, consider the following security issues:
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When the novice clicks the Allow Expert Interaction button, a Remote Assistance expert performs all actions under the novice s user security context and has the same level of network access and local computer privileges. To allow experts outside of your organization to establish Remote Assistance connections (for example, outsourced technical support), the preferred connection method is by VPN account. This is the preferred method because it avoids opening TCP Port 3389 to allow traffic through your firewall. Consult your network administrator for more information about your organization s policies towards external technical support providers. In Windows XP Service Pack 2, the default configuration of Windows Firewall blocks incoming Remote Assistance offers from being received. For more information, see article 555179, Windows XP SP2 Firewall blocks offers of Remote Assistance, in the Microsoft Knowledge Base at http://support.microsoft.com.
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An added feature for Windows XP Professional, known as Offer Remote Assistance, enables an expert with Administrators group privileges to initiate a session without first receiving an invitation from the novice. This feature allows experts (for example, Domain Administrators) to provide assistance within an organization. Offer Remote Assistance is disabled by default, but you can enable it by modifying a Group Policy setting. To enable Offer Remote Assistance 1. In the Run dialog box, type gpedit.msc. 2. Expand Local Computer Policy, expand Computer Configuration, and then expand Administrative Templates. 3. Expand System, and then expand Remote Assistance. 4. In the details pane, double-click Offer Remote Assistance, click Enabled, and then click OK. You can also grant Offer Remote Assistance privileges to nonadministrators by using the following procedure. To enable Offer Remote Assistance for nonadministrators 1. In the Run dialog box, type gpedit.msc. 2. Expand Local Computer Policy, expand Computer Configuration, and then expand Administrative Templates. 3. Expand System, and then expand Remote Assistance. 4. In the details pane, double-click Offer Remote Assistance and then click Enabled.
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5. Click Show and then click Add. In the Add Item dialog box, type the name of the user or group that you want to grant Offer Remote Assistance privileges to by using the following syntax:
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domain\username
or
domain\groupname
The computers of the novice and expert users must be members of the same domain or members of domains that trust each other. 6. Click OK and repeat Steps 1 through 5 for each user or group. For more information about Group Policy, see 17, Managing Authorization and Access Control, 1, Planning Deployments, and 5, Managing Desktops. Also, see the Deployment Planning Guide of the Microsoft Windows 2000 Server Resource Kit and the Change and Configuration Management Deployment Guide link on the Web Resources page at http://www.microsoft.com/windows/reskits/webresources. To offer remote assistance to a novice 1. You, an expert, inform the novice that you intend to offer Remote Assistance. 2. In Help and Support Center, click Pick a task, click Use Tools, and then click Offer Remote Assistance. 3. Follow the instructions, and provide the name or IP address for the computer to which the novice is logged on. The following prompt appears on the novice s computer:
The network administrator Domain\User would like to view your screen and chat with you in real time, and work on your computer. Would you like to give Domain\User access to your computer
A Remote Assistance session starts after the novice responds affirmatively to the prompt. Note
The Offer Remote Assistance feature does not remove the requirement that the novice be present to accept the session request from the expert. The novice can end the session at any time by clicking Disconnect or by pressing the disconnect hot key.
Other Remote Assistance Features
In addition to sharing control of the desktop, Remote Assistance also provides these features useful for troubleshooting problems affecting the novice:
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